fish are processed into meal and used as a supplementary protein food. in the processing the oil is first extracted to produce wet fish cake containing 80 wt% water and 20 wt% bone-dry cake.
this wet cake feed is dried in rotary drum dryers to give a "dry" fish cake product containing 40 wt% water. finally, the product is finely ground and packed.
calculate the kg/h of wet cake feed needed to produce 1000 kg/h of "dry" fish cake product.